2020 Mercedes C300 • Compare 36 used cars with valuation

Market overview: April-2026 Price Analysis: A used Mercedes C300 from 2020 currently costs between £13,500 and £21,950. On average, the mileage for this year stands at 60,610 miles. The depreciation and price trend over the last 12 months is -£2,140.

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Carwow

2019

(2019) Mercedes C300 AMG line 258 HP

£17,600

Good price

You save £1,300

WS11 1SL Staffordshire, Staffordshire

150 g CO2/km comb. - 258 HP (189 kW) - 7.3 Mpg

Carwow

2019

(2019) Mercedes C300 AMG Line Premium 245 HP

£19,825

Fair price

You save £375

RM13 8RH Greater London, London

145 g CO2/km comb. - 245 HP (180 kW) - 5.5 Mpg

Carwow

2019

(2019) Mercedes C300 AMG Line Premium Plus 258 HP

£19,300

Fair price

Estimated price £18,477

WD3 3RT Croxley Green, Hertfordshire

163 g CO2/km comb. - 258 HP (189 kW) - 7.2 Mpg

Carwow

2019

(2019) Mercedes C300 AMG Line Premium 258 HP

£20,749

Fair price

You save £151

EH15 1BT Edinburgh, Edinburgh

162 g CO2/km comb. - 258 HP (189 kW) - 7.1 Mpg

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

-5%

1 / 4

Used (2020) Mercedes C300 AMG Line Premium Plus 258 HP | Good price

- C-Class Cabriolet AMG Line

2020
39,999 miles
Trim level: AMG Line Premium Plus
2.0L Petrol
Cabriolet
Automatic
258 HP (189 kW)
CO2 emissions: 174 g CO2/km comb.
mpg: 7.5
Details

Good price

£18,990

£19,990

SO418JD

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Availability verified

-4%

1 / 4

Used (2020) Mercedes C300 AMG Line Premium 245 HP | Good price

- C-Class Coupe AMG Line Premium

2020
81,385 miles
Trim level: AMG Line Premium
2.0L Diesel
Coupe
Automatic
245 HP (180 kW)
CO2 emissions: 145 g CO2/km comb.
mpg: 5.5
Details

Good price

£14,640

£15,295

W1H 7AB Greater London, London

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-3%

1 / 3

Used (2020) Mercedes C300 AMG Line Premium 245 HP | Good price

- C-Class Cabriolet AMG Line

2020
49,543 miles
Trim level: AMG Line Premium
2.0L Diesel
Cabriolet
Automatic
245 HP (180 kW)
CO2 emissions: 153 g CO2/km comb.
mpg: 5.8
Details

Good price

£17,150

£17,800

N11 1GN Greater London, London

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Availability verified

-4%

1 / 3

Used (2020) Mercedes C300 AMG line 258 HP | Super price

- C-Class Coupe AMG Line 2dr

2020
31,963 miles
Trim level: AMG line
2.0L Petrol
Coupe
Automatic
258 HP (189 kW)
CO2 emissions: 161 g CO2/km comb.
mpg: 7.1
Details

Super price

£18,519

£19,322

E65LU

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Carwow

2020

(2020) Mercedes C300 AMG Line Premium 245 HP

£17,000

Good price

You save £1,300

SK1 3JG Greater Manchester, Manchester

145 g CO2/km comb. - 245 HP (180 kW) - 5.5 Mpg

Carwow

2020

(2020) Mercedes C300 AMG line 258 HP

£18,519

Super price

You save £4,081

E65LU

161 g CO2/km comb. - 258 HP (189 kW) - 7.1 Mpg

Carwow

2019

(2019) Mercedes C300 AMG Line Premium 258 HP

£18,699

Good price

You save £1,401

CW7 Cheshire West And Chester, Cheshire

147 g CO2/km comb. - 258 HP (189 kW) - 44.1 Mpg

Carwow

2020

(2020) Mercedes C300 AMG Line Premium 245 HP

£17,150

Good price

You save £2,150

N11 1GN Greater London, London

153 g CO2/km comb. - 245 HP (180 kW) - 5.8 Mpg

-1%

1 / 3

Used (2020) Mercedes C300 AMG Line Premium 245 HP | Good price

- C-Class Coupe AMG Line Premium

2020
63,879 miles
Trim level: AMG Line Premium
2.0L Diesel
Coupe
Automatic
245 HP (180 kW)
CO2 emissions: 145 g CO2/km comb.
mpg: 5.5
Details

Good price

£17,000

£17,200

SK1 3JG Greater Manchester, Manchester

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-3%

1 / 4

Used (2020) Mercedes C300 AMG line 258 HP | Super price

C Class 2.0 AMG Line Estate 5dr

2020
47,341 miles
Trim level: AMG line
2.0L Petrol
Estate
Automatic
258 HP (189 kW)
Details

Super price

£17,300

£18,000

Exchange and Mart

Staffordshire, Staffordshire

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-6%

1 / 4

Used (2020) Mercedes C300 AMG line 245 HP | Good price

C Class 2.0 AMG Line Edition

2020
46,653 miles
Trim level: AMG line
2.0L Diesel
Sedan
Automatic
245 HP (180 kW)
Details

Good price

£18,299

£19,499

Motors.co.uk

YO19 4SH Crockey Hill, North Yorkshire

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1 / 1

Used (2020) Mercedes C300 AMG line | Super price

C Class AMG Line Edition Premium

2020
48,246 miles
Trim level: AMG line
2.0L Petrol
Sedan
Automatic
mpg: 35.8
Details

Super price

£19,200

Parkers.co.uk

DE65 5FJ Hilton, Derbyshire

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1 / 1

Used (2020) Mercedes C300 AMG line | Good price

de EQ Power AMG Line Edition

2020
45,000 miles
Trim level: AMG line
2.0L Diesel
Estate
Automatic
mpg: 50.4
Details

Good price

£18,980

Parkers.co.uk

Sheffield, South Yorkshire

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-5%

1 / 4

Used (2020) Mercedes C300 AMG Line Premium 245 HP | Good price

C-Class Cabriolet (2020/20)C 300 d

2020
49,980 miles
Trim level: AMG Line Premium
2.0L Diesel
Cabriolet
Automatic
245 HP (180 kW)
mpg: 48.7
Details

Good price

£18,790

£19,790

Parkers.co.uk

OL10 4AB Greater Manchester, Manchester

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Carwow

2022

(2022) Mercedes C300 AMG line 258 HP

£22,999

Fair price

You save £501

CW7 3AL Cheshire West And Chester, Cheshire

156 g CO2/km comb. - 258 HP (189 kW) - 6.9 Mpg

Carwow

2020

(2020) Mercedes C300 AMG Line Premium 245 HP

£16,895

Fair price

You save £805

BL13DE

145 g CO2/km comb. - 245 HP (180 kW) - 5.5 Mpg

Carwow

2019

(2019) Mercedes C300 AMG Line Premium 258 HP

£19,995

Good price

You save £1,505

BL1 3DE Greater Manchester, Manchester

162 g CO2/km comb. - 258 HP (189 kW) - 7.1 Mpg

Carwow

2019

(2019) Mercedes C300 AMG Line Premium 258 HP

£20,368

Fair price

Estimated price £19,618

WC1E 7DP Greater London, London

148 g CO2/km comb. - 258 HP (189 kW) - 44.0 Mpg

1 / 4

Used (2020) Mercedes C300 AMG Line Premium Plus | Good price

C-Class Coupe (2020/20)C 300 d AMG

2020
79,000 miles
Trim level: AMG Line Premium Plus
2.0L Diesel
Coupe
Automatic
mpg: 50.4
Details

Good price

£17,949

£16,949

Parkers.co.uk

LU5 4JN Central Bedfordshire, Bedfordshire

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-1%

1 / 4

Used (2020) Mercedes C300 AMG line 258 HP | Good price

C Class AMG Line Edition 4dr

2020
70,113 miles
Trim level: AMG line
2.0L Petrol
Sedan
Automatic
258 HP (189 kW)
mpg: 39.8
Details

Good price

£16,499

£16,799

Parkers.co.uk

CM2 9RA Great Baddow, Essex

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New

1 / 4

Used (2020) Mercedes C300 AMG line | Super price

C Class AMG Line Edition Premium

2020
72,974 miles
Trim level: AMG line
2.0L Diesel
Sedan
Automatic
Details

Super price

£13,500

Motors.co.uk

S4 8AQ South Yorkshire, South Yorkshire

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1 / 3

Used (2020) Mercedes C300 AMG Line Premium 245 HP | Fair price

- C-Class Coupe AMG Line Premium

2020
70,425 miles
Trim level: AMG Line Premium
2.0L Diesel
Coupe
Automatic
245 HP (180 kW)
CO2 emissions: 145 g CO2/km comb.
mpg: 5.5
Details

Fair price

£16,895

BL13DE

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1 / 4

Used (2020) Mercedes C300 AMG line 245 HP | Fair price

- C-Class SaloonAMG Line Edition

2020
29,819 miles
Trim level: AMG line
2.0L Diesel
Sedan
Automatic
245 HP (180 kW)
CO2 emissions: 152 g CO2/km comb.
mpg: 5.7
Details

Fair price

£21,485

BL2 2BL Greater Manchester, Manchester

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Availability verified

Used (2020) Mercedes C300 AMG line 245 HP | Fair price

de EQ Power AMG Line Night Edition

2020
50,700 miles
Trim level: AMG line
2.0L Diesel
Estate
Automatic
245 HP (180 kW)
mpg: 49.6
Details

Fair price

£19,245

£19,195

Parkers.co.uk

Exeter, Devon

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1 / 4

Used (2020) Mercedes C300 AMG line | Fair price

C Class 2.0 AMG Line Edition

2020
96,088 miles
Trim level: AMG line
2.0L Diesel
Sedan
Automatic
mpg: 43.5
Details

Fair price

£15,995

£16,100

Motors.co.uk

CM20 2HE Harlow, Hertfordshire

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-9%

1 / 4

Used (2020) Mercedes C300 AMG line 245 HP | Fair price

C Class 2.0 AMG Line (Premium)

2020
41,800 miles
Trim level: AMG line
2.0L Diesel
Cabriolet
Automatic
245 HP (180 kW)
mpg: 48.7
Details

Fair price

£19,990

£21,990

Parkers.co.uk

UB7 8HY Greater London, London

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-9%

1 / 4

Used (2020) Mercedes C300 AMG Line Premium 242 HP | Fair price

C Class AMG Line Premium 2dr

2020
55,000 miles
Trim level: AMG Line Premium
2.0L Diesel
Coupe
Automatic
242 HP (177 kW)
Details

Fair price

£18,995

£20,995

Motors.co.uk

BL1 8HF Greater Manchester, Manchester

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New

1 / 4

Used (2020) Mercedes C300 AMG Line Premium Plus | Fair price

C Class AMG Line Premium Plus 2dr

2020
85,000 miles
Trim level: AMG Line Premium Plus
2.0L Diesel
Coupe
Automatic
mpg: 50.4
Details

Fair price

£18,940

Motors.co.uk

BT80 9BD Mid Ulster

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Carwow

2019

(2019) Mercedes C300 AMG line 258 HP

£20,495

Fair price

Estimated price £20,069

BL1 3DE Greater Manchester, Manchester

174 g CO2/km comb. - 258 HP (189 kW) - 7.5 Mpg

Carwow

2019

(2019) Mercedes C300 AMG line 258 HP

£18,635

Good price

You save £2,165

RM13 8RH Greater London, London

173 g CO2/km comb. - 258 HP (189 kW) - 7.5 Mpg

Carwow

2018

(2018) Mercedes C300 AMG Line Premium 258 HP

£18,911

Fair price

You save £89

RM13 8RH Greater London, London

148 g CO2/km comb. - 258 HP (189 kW) - 7.1 Mpg

Carwow

2019

(2019) Mercedes C300 AMG line 245 HP

£16,620

Fair price

You save £780

BB1 3NU Lancashire, Lancashire

130 g CO2/km comb. - 245 HP (180 kW) - 5.7 Mpg

Used (2020) Mercedes C300 AMG Line Premium 245 HP | Fair price

C Class AMG Line Premium 2dr

2020
42,800 miles
Trim level: AMG Line Premium
2.0L Diesel
Cabriolet
Automatic
245 HP (180 kW)
mpg: 48.7
Details

Fair price

£21,950

Parkers.co.uk

OL11 2NQ Greater Manchester, Manchester

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1 / 4

Used (2020) Mercedes C300 AMG line | Fair price

C Class 2.0 AMG Line Edition

2020
88,000 miles
Trim level: AMG line
2.0L Diesel
Sedan
Automatic
Details

Fair price

£16,995

Motors.co.uk

LU2 0JD Luton, Bedfordshire

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1 / 2

Used (2020) Mercedes C300 AMG line | Fair price

C Class 2.0 AMG Line (Premium

2020
33,251 miles
Trim level: AMG line
2.0L Diesel
Coupe
Automatic
mpg: 50.4
Details

Fair price

£23,990

Motors.co.uk

CF11 8UT Cardiff, South Glamorgan

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-5%

1 / 4

Used (2020) Mercedes C300 AMG Line Premium 245 HP | Fair price

C Class AMG Line Premium 4dr

2020
57,700 miles
Trim level: AMG Line Premium
2.0L Diesel
Sedan
Automatic
245 HP (180 kW)
mpg: 43.5
Details

Fair price

£17,990

£18,990

Motors.co.uk

LE4 9HU Leicester, Leicestershire

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1 / 4

Used (2020) Mercedes C300 AMG line 245 HP | Fair price

C Class AMG Line 2dr 9G-Tronic

2020
50,000 miles
Trim level: AMG line
2.0L Diesel
Coupe
Automatic
245 HP (180 kW)
mpg: 51.4
Details

Fair price

£20,950

Motors.co.uk

BT45 6JQ Ballyronan

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Carwow

2019

(2019) Mercedes C300 AMG line 245 HP

£18,923

Fair price

Estimated price £18,508

RM13 8RH Greater London, London

133 g CO2/km comb. - 245 HP (180 kW) - 5.9 Mpg

Carwow

2020

(2020) Mercedes C300 AMG Line Premium Plus 258 HP

£18,990

Good price

You save £2,510

SO418JD

174 g CO2/km comb. - 258 HP (189 kW) - 7.5 Mpg

Carwow

2019

(2019) Mercedes C300 AMG Line Premium 258 HP

£19,799

Fair price

You save £201

DE21 6BZ Derby, Derbyshire

148 g CO2/km comb. - 258 HP (189 kW) - 7.1 Mpg

Carwow

2020

(2020) Mercedes C300 AMG line 245 HP

£21,485

Fair price

Estimated price £20,880

BL2 2BL Greater Manchester, Manchester

152 g CO2/km comb. - 245 HP (180 kW) - 5.7 Mpg

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